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Published on: January 26, 2019
Cardiopulmonary monitoring at home: the CHIME monitor
M R Neuman1, H Watson, R S Mendenhall
1Departments of Reproductive Biology and Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA. mneuman@memphis.edu
Insights
A new home infant monitor accurately measures breathing and heart activity. This physiologic monitor is suitable for home use, offering reliable data for infant health studies.
Area of Science:
- Biomedical Engineering
- Infant Health Monitoring
- Medical Device Development
Background:
- Home monitoring of infants is crucial for understanding and preventing health issues.
- Existing monitors may have limitations in accuracy and comprehensiveness.
- The Collaborative Home Infant Monitor Evaluation (CHIME) aimed to assess advanced monitoring technologies.
Purpose of the Study:
- To introduce and evaluate a novel physiologic monitor for home infant use.
- To assess the performance and reliability of the monitor's various sensing capabilities.
- To determine the monitor's suitability for clinical studies like CHIME.
Main Methods:
- Development of a multi-parameter physiologic monitor for infants.
- Utilized respiratory inductance plethysmography, transthoracic impedance, ECG, and pulse oximetry.
- Collected and analyzed data from 24 infants in the CHIME study.
Main Results:
- High signal quality for clinical interpretation: 91.7% (respiratory inductance plethysmography), 100% (ECG), 99.7% (heart rate), 87% (pulse oximeter).
- Breath detection sensitivity of 96% and specificity of 65% compared to human scorers.
- Accurate detection of significant bradycardias, with additional events noted for further review.
Conclusions:
- The developed physiologic monitor demonstrates high data quality and reliability for home infant monitoring.
- The monitor is superior to conventional devices and suitable for clinical research applications.
- This technology supports the successful execution of large-scale infant health evaluation studies.
Abstract:
A new physiologic monitor for use in the home has been developed and used for the Collaborative Home Infant Monitor Evaluation (CHIME). This monitor measures infant breathing by respiratory inductance plethysmography and transthoracic impedance; infant electrocardiogram, heart rate and R-R interval; haemoglobin O2 saturation of arterial blood at the periphery and sleep position. Monitor signals from a representative sample of 24 subjects from the CHIME database were of sufficient quality to be clinically interpreted 91.7% of the time for the respiratory inductance plethysmograph, 100% for the ECG, 99.7% for the heart rate and 87% for the 16 subjects of the 24 who used the pulse oximeter. The monitor detected breaths with a sensitivity of 96% and a specificity of 65% compared to human scorers. It detected all clinically significant bradycardias but identified an additional 737 events where a human scorer did not detect bradycardia. The monitor was considered to be superior to conventional monitors and, therefore, suitable for the successful conduct of the CHIME study.
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